No I didn't exclude those. From the KitKat list I see 5 bullets that say API and 2 that say framework. I'm not familiar with programming, so I'm not sure if any others fall into that category. None of the remaining bullets on the iOS changelog use the terms API or framework.

No, KitKat was a major release that had an extensive changelog https://developer.android.com/about/versions/kitkat.html .And yes, iOS 7 adoption was faster. Currently, though, it is not growing faster according to basic math.

I don't know what to say. It is equivalent. Apple adds new features and updates some parts of the system on integer updates while Google does those things to Android on point updates. On Android, integer updates seem to come only with major overhauls of the system and/or major UI overhauls; I've never seen it defined explicitly. Apple seems to use point updates for bug fixing or small tweaks while point-point updates are used for critical bugs that need to be patched...